64028140 has 24 divisors (see below), whose sum is σ = 146683152. Its totient is φ = 23282880.

The previous prime is 64028123. The next prime is 64028141. The reversal of 64028140 is 4182046.

It is not an unprimeable number, because it can be changed into a prime (64028141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145299 + ... + 145738.

It is an arithmetic number, because the mean of its divisors is an integer number (6111798).

Almost surely, 2^64028140 is an apocalyptic number.

It is an amenable number.

64028140 is an abundant number, since it is smaller than the sum of its proper divisors (82655012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64028140 is a wasteful number, since it uses less digits than its factorization.

64028140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291057 (or 291055 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 64028140 is about 8001.7585567174. The cubic root of 64028140 is about 400.0586164099.

The spelling of 64028140 in words is "sixty-four million, twenty-eight thousand, one hundred forty".